put heads together

put heads together (third-person singular simple present puts heads together, present participle putting heads together, simple past and past participle put heads together)

1. To collaborate in a mental task, such as generating ideas.

   I'm sure if we put our heads together we can come up with a solution.

   • 2017 August 27, Brandon Nowalk, “Game Of Thrones slows down for the longest, and best, episode of the season (newbies)”, in The Onion AV Club‎:

     Sam and Bran put their little heads together and discover that Jon Snow’s real name is Jon Sand, er, Aegon Targaryen.

• many hands make light work
• skull session
• two heads are better than one